Transglucosidation Action of Crystalline Mold Maltase

Part I. Transfer of Glucose from α-Heteroside to Alcohols and Sugars

抄録

1. Glucosyl transfer from p-nitrophenol-α-D-glucoside to several alkyl- and arylalcohols was observed with crystalline mold maltase. α-Ethylglucoside was isolated as a transglucosidation product, indicating the evidence of such action.
2. No reaction of α-glucoside synthesis from free glucose and alcohol could be observed with mold maltase.
3. By using glucose, fructose or mannose as glucosyl acceptors, the glucosyl residue of p-nitrophenol-α-D-glucoside was transferred to these acceptor sugars. Paperchromatography showed the formation of isomaltose from glucose, three unknown oligosaccharides from fructose and one unidentified oligosaccharide from mannose, respectively.